Serial interface initialization error

[orlikom]

While trying to run the integration with serial interface I found error in line 317 of init.py. The entry.data[CONF_HOST] is not defined for serial inteface and the integration fails to run. I suggest change in lines 317-322 to: if entry.data[CONF_HOST] is None: port_host = "" port_name = str(entry.data[CONF_PORT]) else: port_host = "".join(filter(str.isalnum, entry.data[CONF_HOST])) port_name = "".join(filter(str.isalnum, entry.data[CONF_PORT]))

[lmatula]

I made changes, plese test latest master commit. I'm can't test direct serial connetion